Simeon Avery was born 17 September 1759 in Norwich, New London County, Connecticut, United States to Charles Avery (1730-1774) and Abigail Post (1733-1774) and died 16 January 1803 Brandon, Rutland County, Vermont, United States of unspecified causes. He married Sarah Bump (1764-1856) 1783 in Brandon, Rutland County, Vermont, United States.
Children
| Name | Birth | Death | Joined with |
| Simeon Shipman Avery (1784-1873) | 14 February 1784 Rutland, Rutland County, Vermont, United States | April 1873 North Elba, Essex County, New York, United States | Polly Clark (1789-1846) |
| Elijah Avery (1787-) | |||
| Charles Avery (1790-1842) | |||
| Daniel Fayette Avery (1791-1855) | |||
| Royal Augustus Avery (1800-1882) | |||
| Stephen Avery (c1802-) | |||
Siblings
| Name | Birth | Death | Joined with |
| Hannah Avery (1751-1755) | |||
| John Avery (1752-1791) | |||
| Stephen Avery (1756-1838) | |||
| Abigail Avery (1758-) | |||
| Simeon Avery (1759-1803) | 17 September 1759 Norwich, New London County, Connecticut, United States | 16 January 1803 Brandon, Rutland County, Vermont, United States | Sarah Bump (1764-1856) |
| Hannah Avery (1761-1847) | |||
| Samuel Avery (1763-) | |||
| Elizabeth Avery (1764-1804) | |||
| Ruth Avery (1766-) | |||
| Daniel Avery (1768-1851) | |||
| Elijah Avery (1770-) | |||
| Jesse Avery (1772-1773) | |||